Why does my Switch trigger all Cases?

[IAMK]

Hello, I'm a first time user of Python, but I have c++/VB.Net experience. I absolutely dread Python's syntax, but I need to learn it.

What is wrong with my implementation of this switch? Instead of only calling the function of the matching string, it calls all 3.

def f_3OAK():
	print("Hello1.")
	return False

def f_4OAK():
	print("Hello2.")
	return False

def f_5OAK():
	print("Hello3.")
	return False
	
def case(s_Input): #My definition of a Case Switch.
	return {
		'3OAK': f_3OAK(),
		'4OAK': f_4OAK(),
		'5OAK': f_5OAK()
	}[s_Input]

while True:
    case(input("\nPlease enter the win you wish to search for: "))

Thank you in advance.